# hugoarco/powershell-payment-discount-manager architecture

> Architecture diagram of the GitHub repository hugoarco/powershell-payment-discount-manager, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-06-21). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/hugoarco/powershell-payment-discount-manager
- Repository: https://github.com/hugoarco/powershell-payment-discount-manager

## Overview

1. **Repo shape**
   - This is a very small, script-first repository: one PowerShell entrypoint (`descuentos.ps1`) plus documentation and license.
   - Architecturally, it is a **single executable CLI tool**, not a multi-module app or service.

2. **Primary runtime**
   - The whole system runs in **PowerShell 5.0+ on Windows 10/11**.
   - There is no backend, database, or external API dependency shown in the repo; all behavior appears local and interactive.

3. **User interaction boundary**
   - The main boundary is the **interactive console session**.
   - The script collects a user name, presents a colored menu, and drives all features through prompts and selections.

4. **Identity / role handling**
   - The README says users are identified as **students / teachers**, with names omitted for privacy except the author example.
   - This implies a lightweight in-memory user identity step used to personalize output rather than a persistent account system.

5. **Discount calculation subsystem**
   - One core function is **discount computation with validation from 0–100%**.
   - This subsystem likely takes an original price and discount percent, validates the range, and returns a discounted total for comparison.

6. **Payment processing subsystem**
   - Another key branch is **payment method handling** for Visa, PayPal, and Mastercard.
   - Since no external integration is documented, treat this as an internal decision/validation layer rather than real gateway connectivity.

7. **Security-sensitive input**
   - The script uses **SecureString** for password handling.
   - This is the only explicitly security-oriented mechanism mentioned, so the architecture includes a protected input path for credentials separate from normal text prompts.

8. **Ticket generation output**
   - After processing, the script can generate a **`.txt` ticket**.
   - That makes file output a distinct terminal step in the flow: user input → calculation/payment logic → text receipt generation on disk.

9. **Control flow model**
   - The application is organized around a **menu-driven dispatcher**.
   - The menu likely routes into a few isolated operations: identify user, calculate discount, compare prices, process payment, and emit a ticket.

10. **Data flow summary**
   - Input comes from the console, is validated and transformed in-memory, and then exits in two forms:
     - on-screen feedback with colorized messages
     - persisted ticket text files
   - There is no evidence of long-lived state, so the data flow is ephemeral and session-based.

11. **Operational constraints**
   - The README notes **administrator rights are optional**, which suggests the script mostly uses standard user-level file and console capabilities.
   - The only probable environmental dependency is the Windows PowerShell host itself.

12. **How to diagram it**
   - Draw this as a **single-node CLI application** with four internal areas:
     - interactive UI/menu
     - validation and calculation
     - payment method branch
     - ticket/file writer
   - Keep external boundaries minimal: just the Windows PowerShell runtime and the local filesystem for ticket export.

Main entry points: [`descuentos.ps1`](https://github.com/hugoarco/powershell-payment-discount-manager/blob/main/descuentos.ps1) (Menu)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_app["CLI tool"]
  node_descuentos_ps1["descuentos.ps1<br/>entrypoint<br/>[descuentos.ps1]"]
  node_menu_dispatcher["Menu<br/>ui-flow<br/>[descuentos.ps1]"]
  node_user_identity(("Identity<br/>session-state<br/>[descuentos.ps1]"))
  node_secure_input["Secure input<br/>credential-flow<br/>[descuentos.ps1]"]
  node_discount_engine{{"Discounts<br/>validation+calc<br/>[descuentos.ps1]"}}
  node_payment_router{{"Payments<br/>method-branch<br/>[descuentos.ps1]"}}
  node_ticket_writer["Ticket output<br/>file-export<br/>[descuentos.ps1]"]
  node_color_output["Console output<br/>presentation<br/>[descuentos.ps1]"]
end

node_powershell_runtime{{"PowerShell<br/>runtime"}}
node_console_user(("User<br/>actor"))
node_filesystem[("Filesystem<br/>storage")]

node_powershell_runtime -->|"runs"| node_descuentos_ps1
node_console_user -->|"interacts"| node_menu_dispatcher
node_descuentos_ps1 -->|"orchestrates"| node_menu_dispatcher
node_menu_dispatcher -->|"captures"| node_user_identity
node_menu_dispatcher -->|"calculates"| node_discount_engine
node_menu_dispatcher -->|"processes"| node_payment_router
node_menu_dispatcher -->|"reads"| node_secure_input
node_discount_engine -->|"reports"| node_color_output
node_payment_router -->|"reports"| node_color_output
node_user_identity -->|"personalizes"| node_color_output
node_payment_router -->|"emits"| node_ticket_writer
node_ticket_writer -->|"writes"| node_filesystem
node_menu_dispatcher -->|"finalizes"| node_ticket_writer

click node_descuentos_ps1 "https://github.com/hugoarco/powershell-payment-discount-manager/blob/main/descuentos.ps1"
click node_menu_dispatcher "https://github.com/hugoarco/powershell-payment-discount-manager/blob/main/descuentos.ps1"
click node_user_identity "https://github.com/hugoarco/powershell-payment-discount-manager/blob/main/descuentos.ps1"
click node_secure_input "https://github.com/hugoarco/powershell-payment-discount-manager/blob/main/descuentos.ps1"
click node_discount_engine "https://github.com/hugoarco/powershell-payment-discount-manager/blob/main/descuentos.ps1"
click node_payment_router "https://github.com/hugoarco/powershell-payment-discount-manager/blob/main/descuentos.ps1"
click node_ticket_writer "https://github.com/hugoarco/powershell-payment-discount-manager/blob/main/descuentos.ps1"
click node_color_output "https://github.com/hugoarco/powershell-payment-discount-manager/blob/main/descuentos.ps1"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_descuentos_ps1,node_menu_dispatcher,node_user_identity,node_secure_input,node_discount_engine,node_payment_router,node_ticket_writer,node_color_output toneBlue
class node_powershell_runtime,node_console_user,node_filesystem toneNeutral
```

## Components

### CLI tool

Single PowerShell script implementing the discount and payment workflow.

- [descuentos.ps1](https://github.com/hugoarco/powershell-payment-discount-manager/blob/main/descuentos.ps1): entrypoint · Main PowerShell entrypoint and orchestration script. · `descuentos.ps1`
- [Menu](https://github.com/hugoarco/powershell-payment-discount-manager/blob/main/descuentos.ps1): ui-flow · Menu-driven command dispatcher for the interactive session. · `descuentos.ps1`
- [Identity](https://github.com/hugoarco/powershell-payment-discount-manager/blob/main/descuentos.ps1): session-state · Lightweight name capture and role-based personalization for the session. · `descuentos.ps1`
- [Secure input](https://github.com/hugoarco/powershell-payment-discount-manager/blob/main/descuentos.ps1): credential-flow · Protected password handling using SecureString. · `descuentos.ps1`
- [Discounts](https://github.com/hugoarco/powershell-payment-discount-manager/blob/main/descuentos.ps1): validation+calc · Validates discount percentages and computes discounted totals. · `descuentos.ps1`
- [Payments](https://github.com/hugoarco/powershell-payment-discount-manager/blob/main/descuentos.ps1): method-branch · Routes payment handling across Visa, PayPal, and Mastercard branches. · `descuentos.ps1`
- [Ticket output](https://github.com/hugoarco/powershell-payment-discount-manager/blob/main/descuentos.ps1): file-export · Generates the final .txt ticket on disk. · `descuentos.ps1`
- [Console output](https://github.com/hugoarco/powershell-payment-discount-manager/blob/main/descuentos.ps1): presentation · Colorized feedback and results shown in the console. · `descuentos.ps1`

### Other components

- **PowerShell**: runtime · Windows PowerShell host required to run the script.
- **User**: actor · Interactive student/teacher operator using the console prompts.
- **Filesystem**: storage · Local disk used for ticket text output.

## Connections

- PowerShell → descuentos.ps1: runs · PowerShell executes the entrypoint script.
- User → Menu: interacts · The operator drives the workflow through prompts and selections.
- descuentos.ps1 → Menu: orchestrates · The script exposes the main menu and routes actions.
- Menu → Identity: captures · The session starts by collecting a user name and role context.
- Menu → Discounts: calculates · Discount-related branches validate inputs and compute totals.
- Menu → Payments: processes · Payment-method choices are handled by the payment branch.
- Menu → Secure input: reads · Credential-related prompts use protected input handling.
- Discounts → Console output: reports · Validation results and price comparisons are displayed to the user.
- Payments → Console output: reports · Payment branch outcomes are shown in the console.
- Identity → Console output: personalizes · Captured identity is used to tailor visible messages.
- Payments → Ticket output: emits · Completed processing can be persisted as a ticket file.
- Ticket output → Filesystem: writes · The ticket is saved locally as a .txt file.
- Menu → Ticket output: finalizes · The menu can route the user toward receipt generation.